I doubt it's the ignitor or the coil. you need a multi meter to test the ohms on the ignitor. It's an easy test in the fsm.
Tighten all the manifold bolts. If you flood it you might pull the plugs and clean them up.
I would pull a plug and make sure you have spark vs relying on the timing light.
The butterfly rod will leak if your pouring fuel/pumping the accel alot. You should be able to see fuel dropping into the carb.
I would try and use a small bottle of gas. Start it and feed the engine with gas from your little bottle to keep it running.
How much vacuum are you pulling when running?
See you on the trail
Couple o' FJ40's, BJ70, UZJ100, TDI